This map shows the share of total household income received by the top 20% of earners in each U.S. county, based on American Community Survey (ACS) 2023 data from Table B19082 (Shares of Aggregate Household Income by Quintile). The top 20% is defined as the highest-earning households when all households in a given area are ranked by income. Values represent the aggregate income of households in the highest quintile expressed as a percentage of total household income in that county.